2640140

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{1307}}^1$

素因数の和:1417

約数の個数: 24

約数和(自身を含む): 5603472

約数和(自身を除く): 2963332

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 1307, 2020, 2614, 5228, 6535, 13070, 26140, 132007, 264014, 528028, 660035, 1320070, 2640140]

約数ペア:

[(1, 2640140), (2, 1320070), (4, 660035), (5, 528028), (10, 264014), (20, 132007), (101, 26140), (202, 13070), (404, 6535), (505, 5228), (1010, 2614), (1307, 2020)]